Question

Please answer need help for a quiz

Answer 1

Answer:

option B

Step-by-step explanation:

$3i( - 4 + 2i)$

$= > 3i \times ( - 4) + 3i \times 2i$

$= > - 12i + 6 {i}^{2}$

But it's given that ${i}^{2} = - 1$

So,

$- 12i + 6 {i}^{2} = - 12i + 6 \times ( - 1) \\ \: \: \: \: \: \: \: \: \: = - 12i - 6$